package cn.lcsjsxy.yxc.reflect;

import cn.lcsjsxy.yxc.reflect.Person.RichPerson;
import org.junit.Test;

import java.lang.annotation.Annotation;
import java.lang.reflect.Constructor;
import java.lang.reflect.Parameter;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

public class OtherTest {
    /*
     * 获取构造器结构
     * */
    @Test
    public void test1() {
        Class clazz = RichPerson.class;
        //getConstructors():获取当前运行时类中声明为public的构造器
        Constructor[] constructor = clazz.getConstructors();
        for (Constructor c : constructor) {
            System.out.println(c);

            System.out.println();

            //getDeclaredConstructors():获取当前运行时类中声明的所有的构造器
            Constructor[] dec = clazz.getDeclaredConstructors();
            for (Constructor d : dec) {
                System.out.println(d);
            }
        }
    }

    /*
     * 获取运行时类的父类
     * */
    @Test
    public void test2() {
        Class clazz = RichPerson.class;
        Class superClazz = clazz.getSuperclass();
        System.out.println(superClazz);
    }

    /*
     * 获取运行时类的带泛型的父类
     * */
    @Test
    public void test3() {
        Class clazz = RichPerson.class;

        Type genericSuperclass = clazz.getGenericSuperclass();
        System.out.println(genericSuperclass);
    }

    /*
     * 获取运行时类的带泛型的父类的泛型
     * 代码：逻辑性代码 vs 功能性代码
     * */
    @Test
    public void test4() {
        Class clazz = RichPerson.class;

        Type genericSuperclass = clazz.getGenericSuperclass();
        ParameterizedType paramType = (ParameterizedType) genericSuperclass;
        //获取泛型类型
        Type[] actualTypeArguments = paramType.getActualTypeArguments();
//        System.out.println(actualTypeArguments[0].getTypeName());
        System.out.println(((Class) actualTypeArguments[0]).getName());
    }

    /*
     * 获取运行时类实现的接口
     * */
    @Test
    public void test5() {
        Class clazz = RichPerson.class;

        Class[] interfaces = clazz.getInterfaces();
        for (Class c : interfaces) {
            System.out.println(c);
        }

        System.out.println();
        //获取运行时类的父类实现的接口
        Class[] interfaces1 = clazz.getSuperclass().getInterfaces();
        for (Class sc : interfaces1) {
            System.out.println(sc);
        }
    }

    /*
     * 获取运行时类所在的包
     * */
    @Test
    public void test6() {
        Class clazz = RichPerson.class;
        Package pack = clazz.getPackage();
        System.out.println(pack);
    }

    /*
     * 获取运行时类声明的注解
     * */
    @Test
    public void test7() {
        Class clazz = RichPerson.class;
        Annotation[] anno = clazz.getAnnotations();
        for (Annotation a : anno) {
            System.out.println(a);
        }
    }
}
